New Coronavirus Variant (Omicron; B.1.1529) a ‘Serious Concern’ in South Africa

ipatent said:
Is this Delta --> Omicron reinfection or Omicron ---> Omicron?
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The WHO's statement was Omicron --> Omicron. Other studies indicate that having Delta provides nearly no natural immunity against Omicron. However at least one study shows having Omicron provides natural immunity against Delta. All of these scenarios involve no vaccination.
 
gwb-trading said:
Omicron ‘sub-variant’ throws up new virus questions
British health authorities have identified hundreds of cases of the Omicron variant dubbed BA.2.
https://www.aljazeera.com/news/2022/1/22/omicron-sub-variant-throws-up-new-virus-questions
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I wonder if there's a typo in the article because once a mutation has been identified as a Variant of Concer (VOC)...all of its lineages (subvariants) received the exact same identification whereas the article implies that the subvariants do not.

Also, lineages (subvariants) are the primary route for reinfections although rare.

Last of all, as a reminder, the infamous 1918 Influenza Pandemic started in a similar fashion...

In the beginning...it caused primarily mild infections although it only killed off a mere 2 million of the global population...mainly those with underlying medical conditions or immune-compromise.

Then it mutated early in the Pandemic into something much more pathogenic...killing off quickly about another 48 million of the global population.

If Omicron follows a horrible similar mutation route...those vaccinated and then boosted will be very happy they were vaccinated to avoid such a negative outcome.

wrbtrader
 
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Just to directly outline the reinfection percentages with Omicron. Two-thirds of the cases with Omicron are with people who were previously infected with another variant of Covid. This means that previous infection provides basically no protection against Omicron. And I will note that vaccination provides poor protection as well.

Over 66 percent of Omicron cases are reinfections, study shows
https://nypost.com/2022/01/26/over-66-percent-of-omicron-cases-are-reinfections-study/
 
gwb-trading said:
Well 30% effectiveness is better than natural immunity's zero percent effectiveness in regards to infection. Seeing that 90% of those in the ICUs are still the unvaccinated and many of them have been previously infected with Covid prior to Omicron -- it does not seem that prior infection is providing all that much protection in reducing the severity of your Omicron -- but the jury and science (studies, etc.) are still out on this particular point. Time will tell.
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I carried my post to the right thread
 
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